4 What is the approximate percentage of oxygen in expired air? A 0.04% B 4% C 16% D 21%

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1 4 What is the approximate percentage of oxygen in expired air? 0.04% 4% 16% 21% 5 ompared with atmospheric air, air breathed out by a human contains less water vapour, less carbon dioxide. less water vapour, more carbon dioxide. more water vapour, less carbon dioxide. more water vapour, more carbon dioxide. 6 Where is urea made? bladder kidney liver urethra 7 rat has the scientific name Rattus rattus. What do the two parts of this name refer to? genus and species kingdom and genus kingdom and species variety and genus 8 The diagram shows a bird that lives near rivers. Use the key to identify the bird shown in the diagram. 1 toes joined by a flap of skin... go to 2 toes separate... heron 2 beak as long or longer than the head... go to 3 beak not as long as the head... little grebe 3 top of head black... avocet top of head white... mute swan PhysicsndMathsTutor.com

2 9 Phototropism demonstrates which two characteristics of living organisms? growth and nutrition growth and sensitivity movement and nutrition nutrition and sensitivity 10 The table shows the scientific names and the common names of four plants. scientific name lthea officinalis Hottonea palustris Viola palustris Viola tricolor common name marsh mallow water violet marsh violet wild pansy Which word in their names shows that two of the plants share the greatest number of features? marsh palustris Viola violet 11 The equation shows a chemical reaction that occurs in living organisms. glucose + oxygen carbon dioxide + water Which of these characteristics of living organisms is this equation associated with? 12 What is a correct way of naming an organism using the binomial system? ommon buttercup ranunculus acris Ranunculus acris Ranunculus sp. PhysicsndMathsTutor.com

3 13 The diagram shows a leaf. Use the key to identify the plant to which the leaf belongs. leaves leaf in one piece leaf in more than one piece leaf edge smooth leaf edge jagged leaf edge smooth leaf edge jagged Fagus sylvatica Ulmus minor Fraxinus americana Sorbus aucuparia 14 The diagram shows some leaves and flowers of different plants Which are from monocotyledons? 1 and 3 1 and 5 2 and 4 2 and 5 PhysicsndMathsTutor.com

4 15 The list shows the scientific names for eight animals, using the binomial system. lderia modesta renicola cristata renicola marina ustrominius modestus ittium reticulatum otrylloides leachii otryllus schlosseri lypeostoma reticulatum Which two animals are most closely related? lderia modesta and ustrominius modestus renicola cristata and renicola marina ittium reticulatum and lypeostoma reticulatum otryllus schlosseri and otrylloides leachii 16 The diagram shows a flower seen from above. Use the key to find the name of the family to which it belongs. 1 four petals... go to 2 five petals... go to 3 2 two stamens... Scrophulariaceae six stamens... rassicaceae 3 petals joined... aryophyllaceae petals separate... Rosaceae PhysicsndMathsTutor.com

5 17 Some lizards detach their tails when threatened by a predator. Which characteristic is shown? excretion growth reproduction sensitivity 18 The diagram shows a key for five vertebrates. STRT HERE has legs has no legs organism T has feathers has no feathers organism U has scales organism V has no scales organism W Which class of vertebrates does organism W belong to? amphibians birds fish reptiles PhysicsndMathsTutor.com

6 19 The diagram shows an animal whose scientific name is Rattus rattus. Which genus does it belong to? mammal rattus Rattus vertebrate 20 What are the characteristics of bony fish? maintain constant body temperature external ears present jelly-covered eggs scales 21 What are the features of the leaves of a plant that is a eudicotyledon (dicotyledon)? broad leaves parallel veins PhysicsndMathsTutor.com

7 X 22 Many snakes that belong to the viper family are unusual in that they give birth to live young. This is usually a characteristic of which vertebrate group? amphibians birds bony fish mammals 23 Use the key to identify which group is amphibians. 1 hair present mammals hair absent. go to 2 2 feathers present. group feathers absent.. go to 3 3 dry scaly skin... group moist skin.... go to 4 4 four limbs. group no limbs group 24 The diagram illustrates some of the processes carried out by living organisms. oxygen from atmosphere carbon dioxide to atmosphere light energy green plant chicken waste products waste products Which characteristic of living organisms is represented by arrow X? excretion nutrition respiration sensitivity PhysicsndMathsTutor.com

8 25 What is a correct way of naming a species, according to the binomial system? Homo sapiens Homo Sapiens human being sapiens 26 The diagram shows four arthropods. Pediculus 20 nopheles 10 ermacentor 7 arcinus 0.5 How many of these arthropods are insects? PhysicsndMathsTutor.com

9 27 The key can be used to distinguish between four different chemical substances. Use the key to identify which substance could be a protein. 1 contains the element carbon... go to 2 does not contain carbon... 2 contains the element nitrogen... does not contain nitrogen... go to 3 3 gives a positive result with enedict s test... gives a negative result with enedict s test The statements describe four different plants. Which plant must be a monocotyledon? The flowers are wind-pollinated. The flowers each have five petals. The leaves are large with a clear network of veins on them. The leaves have parallel veins. 29 The diagram shows an animal. Use the key to identify this animal. 1 body covered with scales... go to 2 body covered with hair... go to 3 2 has a rounded bill... has a pointed bill... 3 has webbed feet... does not have webbed feet... PhysicsndMathsTutor.com

10 30 ll fish, all birds and all mammals are animals with internal fertilisation. carnivores. vertebrates. warm-blooded animals. 31 The diagram shows an animal. Use the key to identify the animal. 1 has two wings... go to 2 has four wings... go to 3 2 has antennae much shorter than legs... has antennae about the same length as legs... 3 has feathery antennae... has smooth antennae What is not a characteristic of all living organisms? excretion photosynthesis reproduction respiration PhysicsndMathsTutor.com

11 33 Which characteristics do bony fish have? backbone scales hair 34 The diagram shows an animal whose scientific name is Falco peregrinus. To which species does it belong? bird F. peregrinus Falco vertebrate PhysicsndMathsTutor.com

12 35 Use the key to identify the arthropod shown. 1 body divided into segments... go to 2 body not divided into segments... go to 3 2 body has one pair of legs per segment... body has two pairs of legs per segment... 3 one pair of antennae... two pairs of antennae Which characteristics of living things are demonstrated by this sequence? growth and reproduction growth and sensitivity nutrition and reproduction nutrition and sensitivity PhysicsndMathsTutor.com

13 37 The diagram shows the body plan of an invertebrate animal. front rear To which group does the animal belong? annelid crustacean insect nematode 38 The diagram shows an animal. Use the key to identify the animal. 1 front limbs with five fingers... go to 2 front limbs with four fingers... go to 3 2 skin with spots... skin without spots... 3 tail with fins... tail without fins... PhysicsndMathsTutor.com

14 39 Which characteristic do all living organisms show? breathing excretion photosynthesis tropism 40 Why does the energy needed by a human increase during the first ten years of life? oordination and responses improve. Energy is needed for gamete formation. The body is growing. The diet is more balanced. 41 Which feature is characteristic of both annelids and arthropods? compound eyes jointed limbs segmented bodies wings 42 The diagram shows an animal. Use the key to identify the animal. 1 wings present... go to 2 wings absent... go to 3 2 one pair of wings visible... two pairs of wings visible... 3 three pairs of legs... four pairs of legs... PhysicsndMathsTutor.com

15 43 Growth is a characteristic feature of living organisms. Which process provides the energy for growth? excretion movement respiration sensitivity 44 The table shows the number of animals collected in a sample from some woodland and the groups to which they belong. How many arthropods were collected? PhysicsndMathsTutor.com

16 45 Which process provides the raw materials needed for tissue repair? excretion growth nutrition respiration 46 The diagram shows an arthropod. How many pairs of jointed legs does this arthropod have? Which group does not contain animals that are arthropods? annelids arachnids crustaceans insects PhysicsndMathsTutor.com

17 48 Keys are used in biological identification. Which statement may appear in a key and alone could identify one of the plants in the diagrams? The plant has a single deep root with small branches. The plant has many similar roots, arising from a single point. The plant has one flower on the stem. The plant has pointed leaves. 49 The diagram shows how a plant, called a Venus fly-trap, reacts to a fly landing on it. fly trapped a fly lands on a leaf the fly is digested by juices produced by the leaf Which characteristics of living things are shown by the plant in the diagram? excretion and growth growth and sensitivity nutrition and reproduction nutrition and sensitivity PhysicsndMathsTutor.com

18 50 The diagram shows the external features of an animal. To which class does it belong? amphibians fish mammals reptiles PhysicsndMathsTutor.com